1366501380012 has 36 divisors (see below), whose sum is σ = 3454337903016. Its totient is φ = 455483833920.

The previous prime is 1366501380011. The next prime is 1366501380019. The reversal of 1366501380012 is 2100831056631.

1366501380012 is a `hidden beast` number, since 1 + 3 + 66 + 501 + 3 + 80 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1366501380011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327823 + ... + 1685369.

Almost surely, 2^{1366501380012} is an apocalyptic number.

1366501380012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1366501380012 is an abundant number, since it is smaller than the sum of its proper divisors (2087836523004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366501380012 is a wasteful number, since it uses less digits than its factorization.

1366501380012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385518 (or 1385513 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 1366501380012 in words is "one trillion, three hundred sixty-six billion, five hundred one million, three hundred eighty thousand, twelve".